6
metal tower fittings and hardware for use in the installation and maintenance of electrical transmission lines; namely, clamps, clevises, sockets, ball hooks, balleyes, y-clevises, shackles, insulator strings, connectors, bolts, clevise pins, poletop brackets, deadend thimbles, extension links, twisted shackles, deadend assemblies, yoke plates, turnbuckles, x brace fittings, and knee brace fittings
9
electrical transmission and substation equipment, circuit breakers, reclosers, voltage regulators, station class surge arresters, power fuses, by-pass switches, potential and current transformers, disconnect switches, switchgear and battery chargers; electrical transmission line protection and testing equipment; namely, protection relays, cable fault locators, transformer testers, dielectric testers, hv hipots, megger testers, ground fault detectors, bridges, power factor measurement devices, recloser testers, phase shifters, kwh meter testers, impulse generators, circuit breaker testers, infrared locators, and fault indicators
12
utility trucks used in the service of electrical power and other utility lines, insulator washer trucks and trailers and trucks for other utility services
19
non-metal materials used in the installation and maintenance of electrical transmission and other utility lines; namely, poles, crossarms, anchor logs, and pilings